 Difference between 1966 HIPO fuel pump and Non-HIPO fuel pump?
I've removed my fuel pump from 66 w/289 and I'm looking at the pictures shown on Mustangs Unlimited site. The "arm" or "lever" or whatever you call it, on my old one looks more like the HIPO unit? Is there a difference? As I stated in an earlier post my car's vin # indicates "A" code, but I recently found an engine tag placed by a reman co. with a "K" stamped for engine code. Now, whether "K" means something totally different at their shop I don't know. What pump do I order? Thanks in advance. | 
A 66 hipo would have had a Carter 4201S fuel pump. Iy's the 'button top' type with two springs on the arm. It will hace a 4201 S stamped on the the lower edge of the mounting flamge. 
